List price
Input / 1M$1.25Output / 1M$10.00Cache read / 1M$0.13Blended$7.813Value index68.0Last move—
models.dev · MIT · retrieved Oct 24, 2026
OpenAI
GPT-5.1
GPT-5.1 is listed by OpenAI at $1.25 input and $10 output per million tokens. The recorded context window is 400,000 tokens. Release date on file: 2025-11-13. LMArena's text board published 2026-10-20 gives it an overall rating of 1442.8 (rank 67, 41,651 votes). Price source: models.dev (MIT).
- Context38
- Inverse price98
- Arena78
- GPQA—
- Tools100
- Modalities50
Price history
Input and output list price. A missing day stays a gap in the line. The series is not a quality history.
Benchmarks
LMArena is CC-BY-4.0. Epoch scores, including LiveBench where Epoch publishes it, are CC-BY-4.0. A blank cell means this snapshot has no match. Nothing here is estimated.
| Benchmark | Score | Detail | Source |
|---|---|---|---|
| LMArena overall | 1442.8 | rank 67 · 41,651 votes | LMArena leaderboard dataset · CC-BY-4.0 |
| LMArena coding | 1453.5 | rank 96 · 8,409 votes | LMArena leaderboard dataset · CC-BY-4.0 |
| LMArena math | 1446.1 | rank 77 · 2,580 votes | LMArena leaderboard dataset · CC-BY-4.0 |
| GPQA Diamond | — | — | — |
| LiveBench | — | — | — |
| SWE-bench Verified | — | — | — |
| Epoch Capability Index | 149.76 | 148.36–151.74 | Epoch AI Capabilities & benchmarking · CC-BY-4.0 |
Provider prices
The list row is the price used for the value index. Other rows are the same model id on models.dev, plus the LiteLLM catalog price when we have one. A split quote is kept beside the list price.
| Quote | Provider | Input / 1M | Output / 1M | Blended | Source |
|---|---|---|---|---|---|
| List | OpenAI | $1.25 | $10.00 | $7.813 | models.dev · MIT |
| Also listed | Merge Gateway | $1.25 | $10.00 | $7.813 | models.dev · MIT |
| Also listed | Merge Gateway | $1.25 | $10.00 | $7.813 | models.dev · MIT |
| Also listed | Impossibl | $1.25 | $10.00 | $7.813 | models.dev · MIT |
| LiteLLM | openai | $1.25 | $10.00 | $7.813 | LiteLLM model_prices_and_context_window.json · MIT |
Spec
Context400,000Max output128,000Inputtext, imageOutputtextReleased2025-11-13Open weightsNo
Spec fields are from the models.dev row for OpenAI.